Now it's important to remember that this little charger is supposedly capable of charging @ 1A
Thats one amp !

But , the important thing to remember is , this is very much dependent on the power supply
So if you have a USB power supply that delivers lower current ?
I have one that does low current , which makes this bushleague mod very user friendly for charging small batteries ...
Max charge current is around 240mAh
And importantly , the charger actually stops charging ...
The terminating Voltage ( Of the battery ) was 4.19v , which is simply superb ...
If you had a variable current USB power supply , you could have a very powerful 1s battery charging solution ...